Muscular System

Which of the following ARE NOT the functions of MUSCULAR SYSTEM?

• Works together with skeletal system for body movement.

• Secretes some substances for body metabolism.

• Maintains body posture.

• Generates heat for the body when needed.

• Provides framework for the body.

Which of the following organs is made up of a cardiac muscle?

• Stomach

• Heart

• lungs

• Intestine

Smooth muscle

• lungs

• stomach

• intestine

• heart

Which of the following descriptions is pertaining to smooth and cardiac muscles?

• cylindrical in shape

• intercalated myofibril

• uninucleated muscle fiber

• no striations

This is a functional unit of striated muscle.

• sarcomere

• sarcoplasm

• sarcplasmic reticulum

• synapse

The thick filament.

• Actin

• Acetylcholine

• myosin

• myofibril

A sheetlike connective tissue that attached muscle to the bone directly.

• Aponeuroses

• Fascicle

• Endomysium

• Tendon

Label the parts of the skeletal muscle posted above. Write your answers in the box below with number accordingly.

The reversion of the electrical conditions of the sarcolemma when there is a present of more positive ions.

• polarization

• depolarization

• muscle twitching

• muscle contration

What kind of substance are actin and myosin?

• carbohydrates

• nucleic acid

• lipids

• proteins